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Finding the Fourth Proportional to 134,866.60, 202,081.20 and 84,857.20

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Solution

The fourth proportional to 134,866.60, 202,081.20 and 84,857.20 is: 127,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,866.60 : 202,081.20 = 84,857.20 : x
  2. Step 2: Convert to fraction form
    134,866.60/202,081.20 = 84,857.20/x
  3. Step 3: Cross multiply
    134,866.60x = 202,081.20 × 84,857.20
  4. Step 4: Simplify right side
    134,866.60x = 17,148,044,804.64
  5. Step 5: Solve for x
    x = 17,148,044,804.64/134,866.60
  6. Step 6: Final answer
    x = 127,148.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.